Vintage Scandinavian solid silver and blue enamel triangular cufflinks 1960s

A vintage pair of solid silver rounded triangular shaped cufflinks with a curved guilloche stripe pattern under deep blue enamel with an arched rectangular toggle back all with a gold wash - marked for an unidentified Scandinavian maker - total weight 9.3grms - dimensions of face 20mm x 18mm - c.1960 Scandinavia